I just built up a garden pond with a pump to filter the water and let it run over a small water fall.
The problem is, that I want to regulate the pump as the water flow is too high.
So I don’t only want to switch it on and off but I want to control the water quantity.
The pump has a brushless DC motor and the manufacturer sells a dimmer plug to control the pump.
This dimmer plug is not smart and has no memory function. So after switching off the pump the pump starts again with 100%.
My Idea was to control this pump with esp and a PWM.
Has anybody an idea how to realize this idea?